The nucleolar organizer activity of the Agropyron elongatum, its amphiploid with hexaploid wheat (Triticum aestivum) and the chromosome addition lines is analyzed by the silver-staining procedure. Four Ag-NORs are observed in A. elongatum corresponding to the chromosomes 6E and 7E. In the amphiploid
An endonuclease was isolated from 5 days old Agropyron elongatum 8x = Elytrigia turcica McGuire seedlings. The enzyme was purified by means of ammonium sulfate fractionation, DEAE-cellulose and Heparin Sepharose column. The final preparation, named nuclease A, gave a single band after silver
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